| 鄱阳湖持久性有机污染物（POPs）长距离传输潜力模拟 |
| 摘要点击 1743 全文点击 1200 投稿时间：2013-09-30 修订日期：2013-11-06 |
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| 中文关键词 鄱阳湖 TaPL3模型 持久性有机污染物 长距离迁移潜力 总持久性 |
| 英文关键词 Poyang Lake TaPL3 model POPs long-range transport potential (LRTP) overall persistence (Pov) |
| 作者 | 单位 | E-mail | | 弓晓峰 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | xfgong@ncu.edu.cn | | 向洪锐 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | | | 陈春丽 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | hnclchen@163.com | | 周文斌 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | | | 王佳佳 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | | | 刘春英 | 南昌大学环境与化学工程学院, 南昌 330031
江西财经大学旅游与城市管理学院, 南昌 330032 | | | 曾艳 | 南昌大学鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047
南昌大学环境与化学工程学院, 南昌 330031 | |
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| 中文摘要 |
| 利用TaPL3模型模拟研究了鄱阳湖5种典型持久性有机污染物（POPs）的长距离迁移潜力（LRTP）和总持久性（Pov），比较了不同污染物特征迁移距离（CTD）和Pov的大小，并以p，p'-DDT为例对关键参数进行了灵敏度分析. 结果表明，p，p'-DDT、γ-HCH、HCB、PCP和2，3，7，8-TCDD排放到大气中，特征迁移距离（CTDAir）在432 km（2，3，7，8-TCDD）~86479 km（HCB）之间，总持久性（PovAir）在85.6 d（PCP）~2231 d（HCB）之间，土壤相是POPs的主要归宿，约占72.0%；排放到水体中，特征迁移距离（CTDWater）在4207 km （PCP）~1.19×105 km（γ-HCH）之间，总持久性（PovWater）在103 d（PCP）~2890 d（HCB）之间，沉积物相是POPs的主要归宿，约占52.5%. 环境介质中的半衰期和辛醇-水分配系数的对数是影响污染物CTD和Pov的主要理化性质参数. 与同类研究相比，相关POPs在鄱阳湖的CTDAir处于中间水平，但CTDWater偏高，这与鄱阳湖的水体深度和水体流速这两个对CTDWater影响显著的参数较其它研究区域高有关. 研究结果可为该地区POPs的环境过程及环境风险的研究提供科学依据. |
| 英文摘要 |
| The long-range transport potential (LRTP) and overall persistence (Pov) of 5 typical persisitent organic pollutants(POPs) through air and water in Poyang Lake were estimated by the TaPL3 model. The characteristic travel distance (CTD) and Pov of different POPs were compared. In addition, the key parameters were examined by the sensitivity analysis method using p, p'-DDT as an example. The results showed that the CTDAir of p, p'-DDT, γ-HCH, HCB, PCP and 2,3,7,8-TCDD ranged from 432 km (2,3,7,8-TCDD) to 86479 km (HCB), and the value of PovAir ranged from 85.6 d (PCP) to 2231 d (HCB), when POPs were emitted to the atmosphere. Soil phase was the main fate of these typical POPs, and it was about 72.0% percent of the total phase. Meanwhile, the CTDWater was from 4207 km (PCP) to 1.19×105 km (γ-HCH), and PovWater was from 103 d (PCP) to 2890 d (HCB), when POPs were emitted to the water. Sediment phase was the main fate of these typical POPs, and it was about 52.5% percent of the total phase. Half-life in the environment and octanol-water partition coefficient logarithm of POPs were the two main physical-chemical parameters that affected CTD and Pov. When compared with other similar studies in China, the CTDAir of related POPs in Poyang Lake is in the middle level. While the CTDWater was a little higher than other areas, which was due to the higher water depth and water flow velocity of Poyang Lake.Therefore, the higher water depth and water flow velocity were two significantly-affected parameters of CTDWater. The results could provide a scientific basis to studies of environmental process and risks of POPs in Poyang Lake. |
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